Systems and methods for sustainable regeneration of caustic solutions

A portable system for regenerating a caustic solution, comprising:

• a transportable container module having a floor and walls, the container module configured to contain liquid chemicals without leaking outside the module;
• the container module containing a regeneration system, the regeneration system configured to remove aluminum and to increase the concentration of sodium hydroxide in a caustic solution, the regeneration system comprising:
• a mixing tank inside the container module, the mixing tank configured to receive caustic solution from a cleaning tank outside the container module, the mixing tank further configured to receive water that is added to the caustic solution to optimize the concentration of total caustic;
• a crystallizer tank inside the container module, the crystallizer tank configured to receive the caustic solution from the mixing tank;
• a crystallizer bath in the crystallizer tank having a concentration by volume of alumina tri hydrate crystals, the alumina trihydrate crystals having a concentration in the range between 30 and 55 percent, the alumina trihydrate crystals mixing with the caustic solution in the crystallizer tank to form a crystallizer solution;
• a plurality of air mixing wands, the air mixing wands configured to mix the crystallizer solution by air agitation to create a chemical reaction that regenerates sodium hydroxide and precipitates alumina trihydrate crystals, wherein after said chemical reaction, the crystallizer solution comprises a supernatant of a regenerated caustic solution and a plurality of said alumina trihydrate crystals;
• and
• one or more bulkhead fittings used for connecting the cleaning tank to the module.